The process of missing interesting tourist attractions and fond memories, because your eyes are glued to a smartphone treasurehunt ap called GeoCache, to sign your name on a piece of paper along with random strangers who also wasted a good vacation. Extra points for avoiding conversation, and learning absolutely nothing about your surroundings.
Person B: I don't know, I was too busy GeoWanking on my phone, looking for a note someone with Hepatitis probably wrote on, near the Leaning Tower of Pisa.
The stuff people put in geocaches. Trinkets that have little to no intrinsic value but are traded out by geocachers when they find a cache. The sport of geocaching often includes finding a cache of geojunk and tradition says that you take an item and leave an item. Those items are, more often than not, geojunk. Typical items are keyrings, wooden nickels, etc.